Alright, let's work through 85137248 times 49231436 step by step
85137248 × 49231436 = 49231436 × (85137248)
+ 49231436 × 8 that results in 393851488
+ 49231436 × 40 yielding 1969257440
+ 49231436 × 200 giving us 9846287200
+ 49231436 × 7000 that results in 344620052000
+ 49231436 × 30000 what gives us 1476943080000
+ 49231436 × 100000 giving us 4923143600000
+ 49231436 × 5000000 giving us 246157180000000
+ 49231436 × 80000000 resulting in 3938514880000000

= 4191428976128128
